堆积地貌 依照方格将地形图上已选定的低等高线,能控制地貌基本形状的等高线,以及山顶,鞍部,山脚,倾斜变换点和江河等到的位置画到沙盘面上.

According to the grid, the lowest contour line selected on the topographic map, the contour line which can control the basic shape of the landform, and the positions of the top, saddle, foot of the mountain, inclined transformation point and river are drawn on the sand table

将计算好的山顶,鞍部,山脚,倾斜变换点和江河弯曲部等起伏明显的点分别标明高度。

Mark the height of the top of the mountain, saddle, foot of the mountain, inclined transformation point and bend of the river.

在低等到高线范围内,以标明的高度和等高线为依据,先堆出山顶,鞍部,山背等的概略形状作为骨干,再修整其他部分.如沙盘较大,可分片堆积,先堆积进出困难处,后堆积进出方便处.堆积时,应随时对照地形图,以正确显示地貌的起伏状况,并应随时将沙土压紧,以免崩塌变形.如有较大的江河,湖泊,应在修整地貌时一并挖成.堆积完毕,应作全面检查和修整。

Within the range of the lowest contour line, according to the marked height and contour line, first pile up the outline shape of the top, saddle, back of the mountain as the backbone, and then trim other parts. If the sand table is large, it can be piled up in pieces, first pile up the difficult parts, and then pile up the convenient parts. When stacking, it should be compared with the topographic map at any time to correctly show the ups and downs of the landform, and the sand should be compacted at any time, If there are large rivers and lakes, they should be excavated at the same time when trimming the landform. After the accumulation, they should be checked and trimmed comprehensively.

设置地物

Setting up features

沙盘上的地物,如房屋,铁路,桥梁,树木和独立地物等,多用相似的模型表示,公路和乡村路的宽窄不等,不同的颜色表示；江河用蓝色表示;树林用小树枝或绿色表示。地物的大小,应与水平比例尺相适应,关系位置要求正确.设置地物,应按水系,居民地,道路,树林和独立地物的顺序进行设置.后,在相应的位置上插上地名,江河名,山名和高程注记等标识。

The features on the sand table, such as houses, railways, bridges, trees and independent features, are usually represented by similar models. The width of roads and country roads varies, and different colors are used to represent them. Rivers are represented by blue. Trees are represented by twigs or green. The size of the features should be adapted to the horizontal scale, and the relationship position should be correct. The features should be set according to the sequence of water system, residential area, road, forest and independent features. Finally, place name, river name, mountain name and elevation mark should be inserted on the corresponding position.